简介：Weconductedatransientexperimentalinvestigationofsteam–waterdirectcontactcondensationintheabsenceofnoncondensiblegasinalaboratory-scalecolumnwiththeinnerdiameterof325mmandtheheightof1045mm.Weappliedanewanalysismethodforthesteamstateequationtoanalyzethemolarquantitychangeinsteamoverthecourseoftheexperimentanddeterminedthetransientsteamvariation.Wealsoinvestigatedtheinfluenceofflowratesandtemperaturesofcoolingwaterontheefficiencyofsteamcondensation.Ourexperimentalresultsshowthatappropriateincreasingofthecoolingwaterflowratecansignificantlyacceleratethesteamcondensation.Weachievedarapidincreaseinthetotalvolumetricheattransfercoefficientbyincreasingtheflowrateofcoolingwater,whichindicatedahigherthermalconvectionbetweenthesteamandthecoolingwaterwithhigherflowrates.Wefoundthatthetemperatureofcoolingwaterdidnotplayanimportantroleonsteamcondensation.Thismethodwasconfirmedtobeeffectiveforrapidrecoveringofsteam.

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简介：<正>Background:Significanteffortshavebeenmadetoidentifymodifiableriskfactorsofnon-contactanteriorcruciateligament(ACL)injuriesinmaleandfemaleathletes.However,currentliteratureontheriskfactorsforACLinjuryarepurelydescriptive.Anunderstandingofbiomechanicalrelationshipbetweenriskandriskfactorsofthenon-contactACLinjuryisnecessarytodevelopeffectivepreventionprograms.Purpose:Tocomparelowerextremitykinematicsandkineticsbetweentrialswithandwithoutnon-contactACLinjuriesandtodetermineifanydifferenceexistsbetweenmaleandfemaletrialswithnon-contactACLinjuriesregardingthelowerextremitymotionpatterns.Methods:Inthiscomputersimulationstudy,astochasticbiomechanicalmodelwasusedtoestimatetheACLloadingatthetimeofpeakposteriorgroundreactionforce(GRF)duringlandingofthestop-jumptask.MonteCarlosimulationswereperformedtosimulatetheACLinjurieswithrepeatedrandomsamplesofindependentvariables.Thedistributionsofindependentvariablesweredeterminedfrominvivolaboratorydataof40maleand40femalerecreationalathletes.Results:Inthesimulatedinjuredtrials,bothmaleandfemaleathleteshadsignificantlysmallerkneeflexionangles,greaternormalizedpeakposteriorandverticalGRF.greaterkneevalgusmoment,greaterpatellatendonforce,greaterquadricepsforce,greaterkneeextensionmoment.andgreaterproximaltibiaanteriorshearforceincomparisontothesimulateduninjuredtrials.Nosignificantdifferencewasfoundbetweengendersinanyoftheselectedbiomechanicalvariablesinthetrialswithsimulatednon-contactACLinjuries.Conclusion:Smallkneeflexionangle,largeposteriorGRF.andlargekneevalgusmomentareriskfactorsofnon-contactACLinjurydeterminedbyastochasticbiomechanicalmodelwithacause-and-effectrelationship.

简介：Softmaterialisbecomingincreasinglyimportanttomanyindustries,whichleadstothedemandforabetterunderstandingofitsmechanicalpropertiesunderlargedeformation.Inthispaper,atechniqueofintegratingthedigitalmoirémethodandembedded-gratingapproachispresentedforinvestigatingmechanicalbehaviorsofavulcanizedsiliconerubberincontactwithawedge-shapedindenter.Twodistinctdeformationsectorsareobservedfromtheexperimentalresult.Asimplewayofcomputingstrainisalsopresentedbyanalysinggriddeformationwithintheframeworkofgeometricalnonlinearity.Threeregionswereobservedfromstraindistributionalongthehorizontaldirection:thecontactregion,thesink-inregionandthefar-fieldregion.Moreover,theextentofthestickyregionandthatoftheslippyregionwithinthecontactinterfacearedistinguished,whichcanproviderealisticdatafortheoreticalmodelling.Basedonthefinitedeformationelasticitytheory,thedistributionofcontactpressureandshearstressoverthecontactinterfacearederivedforpredictionofpossiblecracks.

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简介：Theefficiencyandaccuracyaretwomostconcernedissuesinthemodelingandsimulationofmulti-bodysystemsinvolvingcontactandimpact.Thispaperproposedaformulationbasedonthecomponentmodesynthesismethodforplanarcontactproblemsofflexiblemulti-bodysystems.Aflexiblebodyisdividedintotwoparts:acontactzoneandanun-contactzone.Fortheun-contactzone,byusingthefixed-interfacesubstructuremethodasreference,afewlow-ordermodalcoordinatesareusedtoreplacethenodalcoordinatesofthenodes,andmeanwhile,thenodalcoordinatesofthelocalimpactregionarekeptunchanged,thereforethetotaldegreesoffreedom(DOFs)aregreatlycutdownandthecomputationalcostofthesimulationissignificantlyreduced.Byusingadditionalconstraintmethod,theimpactconstraintequationsandkinematicconstraintequationsarederived,andtheLagrangeequationsofthefirstkindofflexiblemulti-bodysystemareobtained.Theimpactofanelasticbeamwithafixedhalfdiskissimulatedtoverifytheefficiencyandaccuracyofthismethod.

简介：<正>TidalStarGroup(TSG)isadiversifiedmodernenterprisewithover10sub-companies,alllocatedinmajorcitiesofChinaandengageinvariousfieldsincludingrealestate,mineralexploration,high-techinvestment,bio-techresearch,pharmaceuticalsales,mediaandpress,clothing,decorationengineering,E-commerce,printingindustry,etc..TSGhasitsCPCCommittee,

简介：Thethree-dimensional(3D)structurepredictionofproteinsisanimportanttaskinbioinformatics.Findingenergyfunctionsthatcanbetterrepresentresidue-residueandresidue-solventinteractionsisacrucialwaytoimprovethepredictionaccuracy.Thewidelyusedcontactenergyfunctionsmostlyonlyconsiderthecontactfrequencybetweendifferenttypesofresidues;however,wefindthatthecontactfrequencyalsorelatestotheresiduehydrophobicenvironment.Accordingly,wepresentanimprovedcontactenergyfunctiontointegratethetwofactors,whichcanreflecttheinfluenceofhydrophobicinteractiononthestabilizationofprotein3Dstructuremoreeffectively.Furthermore,afoldrecognition(threading)approachbasedonthisenergyfunctionisdeveloped.Thetestingresultsobtainedwith20randomlyselectedproteinsdemonstratethat,comparedwithcommoncontactenergyfunctions,theproposedenergyfunctioncanimprovetheaccuracyofthefoldtemplatepredictionfrom20%to50%,andcanalsoimprovetheaccuracyofthesequence-templatealignmentfrom35%to65%.

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简介：基于集中的离子微笑并且砍磨擦仪器数据，多决定(0.2nm-5m)卷粗糙与粗糙接触(VR与交流)原则上的三维的结构滑动表面接口表面(PSS)在高效上被测量计算站台；并且物理塑料爬磨擦模型被使用混合的超积分方程与格子Boltzmann与格子格林功能(BE-LB-LG)建立。rheological性质和VR与交流进化在下面的关联短暂(10s)宏正常应力(18300MPa)并且滑动率(0.257.5m/s)被获得；并且在co地震的闪光加热的PSS磨擦是量的第一次分析了。

简介：AmeasurementsystemwiththeCCDmatrixandcomputersystemisdesignedtotestthe2Dsizeofanyshapeworkpiecesautomatically.Inaddition,thesystemadoptsthemethodoftherelativemeasurementwhichincreasestheprecisionandthevelocity.Moreimportantly,theprecisioncan'tbechangedwiththeconditionsofthetemperatureandairpressure.Theexperimentsshowthattherelativeprecisionof0.0029andtheabsoluteprecisionof2.97μmareobtained.Theinstrumentmaybeusedintheproductlineandmakethetestingonlinepossible.

简介：Thispaperisconcernedwithasingularlimitfortheone-dimensionalcompressibleradiationhydrodynamicsmodel.ThesingularlimitweconsidercorrespondstothephysicalproblemoflettingtheBouguernumberinfinitewhilekeepingtheBoltzmannnumberconstant.InthecasewhenthecorrespondingEulersystemadmitsacontactdiscontinuitywave,WangandXie（2011）[12]recentlyverifiedthissingularlimitandprovedthatthesolutionofthecompressibleradiationhydrodynamicsmodelconvergestothestrongcontactdiscontinuitywaveintheL∞-normawayfromthediscontinuitylineatarateofε14,asthereciprocaloftheBouguernumbertendstozero.Inthispaper,WangandXie’sconvergencerateisimprovedtoε7/8byintroducinganewaprioriassumptionandsomerefinedenergyestimates.Moreover,itisshownthattheradiationfluxqtendstozerointheL∞-normawayfromthediscontinuityline,ataconvergencerateasthereciprocaloftheBouguernumbertendstozero.

简介：在这份报纸，我们在场解决合并接触线状况的一个阶段地模型的一个有效精力马厩计划。而不是通常使用的Cahn-Hilliard类型阶段方程，我们与与Navier边界状况结合了不可压缩的海军司烧方程的静态的接触线边界条件收养Allen-Cahn类型阶段地模特儿。设计方法被用来处理海军司烧方程，辅助功能为非凸的Ginzburg四轮马车体积潜力被介绍。我们证明计划是线性的，decoupled和精力马厩。而且，我们证明那个充分分离的计划也是精力稳定。一个有效有限元素空间discretization方法被实现验证建议计划的精确性和效率。数字结果证明建议计划很有效、精确。

简介：调查高速度的润滑油的尖接触球轴承的笼子稳定性，笼子的一个动态模型根据Guptas和Meeks工作被开发。模型能与自由的所有六度在油润滑油下面模仿笼子运动。特别地，模型介绍油电影抑制并且磁滞现象抑制，并且作为有瑕疵的有弹性的接触处理碰撞接触。另外，内部戒指的效果旋转速度，到在笼子稳定性上指导清理和应用负担的袖珍清理的比率被与模型一起模仿笼子运动调查。结果能为忍受参数的球的设计提供一个理论基础。

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简介：Inthiswork,amethodbasedonscanningKelvinprobemicroscopyisproposedtoseparatelyextractsource/drain(S/D)seriesresistanceinoperatingamorphousindium–gallium–zinc–oxide(a-IGZO)thin-filmtransistors.TheasymmetrybehaviorofS/Dcontactresistanceisdeducedandtheunderlyingphysicsisdiscussed.ThepresentresultssuggestthattheasymmetryofS/DcontactresistanceiscausedbythedifferenceinbiasconditionsoftheSchottky-likejunctionatthecontactinterfaceinducedbytheparasiticreactionbetweencontactmetalanda-IGZO.Theoverallcontactresistanceshouldbedeterminedbyboththebulkchannelresistanceofthecontactregionandtheinterfacepropertiesofthemetalsemiconductorjunction.

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简介：AbstractBackground:The catheter-tissue contact force (CF) is one of the significant determinants of lesion size and thus has a considerable impact on the effectiveness of ablation procedures. This study aimed to evaluate the impact of CF on the lesion size during right ventricular outflow tract (RVOT) ablation in a swine model.Methods:Twelve Guangxi Bama miniature male pigs weighing 40 to 50 kg were studied. After general anesthesia, a ThermoCool SmartTouch contact-sensing ablation catheter was introduced to the RVOT via the femoral vein under the guidance of the CARTO 3 system. The local ventricular voltage amplitude and impedance were measured using different CF levels. We randomly divided the animals into the following four groups according to the different CF levels: group A (3-9 g); group B (10-19 g); group C (20-29 g); and group D (30-39 g). Radiofrequency ablations were performed at three points in the free wall and septum of the RVOT in power control mode at 30 W for 30 s while maintaining the saline irrigation rate at 17 mL/min. At the end of the procedures, the maximum depth, surface diameter, and lesion volume were measured and recorded. A linear regression analysis was performed to determine the relationship between continuous variables.Results:A total of 72 ablation lesions were created in the RVOT of the 12 Bama pigs. The maximum depth, surface diameter, and volume of the lesions measured were well correlated with the CF (free wall: β = 0.105, β = 0.162, β = 3.355, respectively, P < 0.001; septum: β = 0.093, β = 0.150, β = 3.712, respectively, P < 0.001). The regional ventricular bipolar voltage amplitude, unipolar voltage amplitude, and impedance were weakly positively associated with the CF (β = 0.065, β = 0.125, and β = 1.054, respectively, P < 0.001). There was a significant difference in the incidence of steam pops among groups A, B, C, and D (free wall: F = 7.3, P = 0.032; septum: F = 10.5, P = 0.009); and steam pops occurred only when the CF exceeded 20 g. Trans-mural lesions were observed when the CF exceeded 10 g in the free wall, while the lesions in the septum were non-trans-mural even though the CF reached 30 g.Conclusions:CF seems to be a leading predictive factor for the size of formed lesions in RVOT ablation. Maintaining the CF value between 3 and 10 g may be reasonable and effective for creating the necessary lesion size and reducing the risk of complications, such as steam pops and perforations.

简介：为了介绍一篇小说，用42的外国身体forceps.METHODSData用一个棱柱接触透镜经历了ACFB的移动的42个病人看的一个棱柱接触透镜和23计量器和23计量器在前面的房间角度的移动接近外国身体(ACFB)到2013年10月的从2008年1月的外国身体钳被收集并且分析。在组A的二十只眼睛由通过角膜的异色边缘切口使用toothed钳收到了常规途径，并且一旦移动是75%，在组B的22只眼睛通过ACFB的相反的角膜的异色边缘incision.RESULTSThe成功率经历了新奇方法(15/20)在组A，并且在组B的100%(22/22)。组A的平均操作时间与组B相比是显著地更长的(34.9汧畡潣慭洠摥捩瑡潩?慷?潣摮'渍?吠慥?牢慥?灵琠浩??呕?瀠湵瑣慵整欠牥瑡瑩獩?敮摥映牯栠汥?甠敳漠?牡楴楦楣污琠慥獲愠摮琠敨琠敲瑡敭瑮猠瑡獩慦瑣潩??癲祥漠?湩牴潡畣慬?牰獥?敲?佉?眠牥?敭獡牵摥愠?慢敳楬敮??湡?㈱潭刮卅?協??慷?L敬琠?敲畤散琠敨洠慥?畮扭牥漠?敭楤慣楴湯?敮摥摥映潲????剐卅?桳湵?敶獲獵琠慲敢畣敬瑣浯?湩瀠楲慭祲漠数?湡汧?汧畡潣慭?呅佈卄桔獩椠??牰獯数瑣癩?潣潨瑲挠浯慰慲楴敶猠湩汧?散瑮牥猠畴祤?潆瑲?楮敮攠敹?景??慰楴?